The Rowing Machine Seat Cover by Vapor Fitness is designed for the Concept 2 Rowing Machine seat. ** You will notice the big difference in comfort when you row long distances or multiples times a week. Do not expect to notice a big difference immediately when you sit down on it for a short workout. If you are looking for immediate cushion comfort for short workouts, please have a look at the Hornet Watersports Rowing Cushion, also available on Amazon.